I'd assume that bullets can travel a helluva lot faster than magic explosion stuff, and at a much quicker rate to.
A standard SWAT team would probably have been able to do the job more efficiently than Harry and his friends
English
#Offtopic
-
Because then instead of having 7 best selling books and 8 blockbuster movies, we'd have 1 20 page book that no one has ever heard of.